spiffe://cluster.local/ns/istio-system/sa/ztunnel        NA       Initializing     false          NA                                   NA                       NA
spiffe://cluster.local/ns/istio-system/sa/another-sa     NA       Unavailable      false          NA                                   NA                       NA

			}
		}
	}
	return w.Flush()
}

func valueOrNA(value string) string {
	if value == "" {
		return "NA"
	}
	return value
}

func certNotExpired(cert *Cert) bool {
	// case where cert state is in either Initializing or Unavailable state
	if cert.ExpirationTime == "" && cert.ValidFrom == "" {
		return false
	}